Distance-operated cutting pliers



May 15, 1923.

P. SECCAMANI DISTANCE OPERATED CUTTING PLIERS- Filed July 2, 1920 2 Sheets-Sheet 1 Inuen tor May 15, 1923; 1,455,673

P. SECCAMANI DISTANCE OPERATED CUTTING PLIERS Filed July 1920 2 Sheets-Sheet 2 [nvenior P 56cm mam;

Patented l /lay 15, 1923..

titan DISTANCE-OPERATED CUTTING PLIEBST Application filed E1133! 7, 1820.

Serial lIo. 394,537.

(GRANTED UNDER THE PROVISEEES OF THE ACT 0 MARCH 3, 1921, 41 STAT. L, 1313.)

and resident of 36 Via Trieste, Brescia.

Italy, have invented certain new and useful Improvements in Distance-Operated Cutting Pliers for which I have applied. for patent in Italy, application date June 2?, 1916, date of grant August 10, 1916, No, 15%890 Reg. Gen), of which the following is specification.

Object of the invention is the provision of a cutting plier for cutting wires which can be operated at a distance by means of simple pull. action and which due to its special arrangement of parts can also be employed for cutting metal cords.

The annexed drawing shows only by way it example emb dimentof the invention in which,

Fig. 1 is a front view the casing and the box being removed.

Fig. 2 is a side view, the casing and the box being removed and in section on line;

A-B of Fig. 1.

Figs. 3, 4, 5 and 6 show some details.

Fig. 7 is a section on the line X-X of Fi 1.

Fig. 8 is a general view in greatly reduced scale.

Fig. 9 is another detail.

Fig.10 shows the left portion of the de vice in respect to the line A. B of, F s, 1.

The head 1 of the plier is provided with two jaws 16 and 17 each integral with one of the arms 2,"2 pivoted together at 18, The free ends of these arms are pivoted at 19, 19 each on one of the two circular sectors 3, 3 which in turn are pivoted at 20, 20 onthe opposite cross-pieces 21.

The circular portion of each sector meshes with a pinion 24 pivoted at 25 and inteqral with a gear 4 which in its turn engages a pinion 26 pivoted at 27 and integral with a pulley 5 having a deep groove 28. The pivots 25 and 27 are fitted respectively on the cross-pieces 22 and 23.

The cross-pieces 21, 22 and 23 are fixed on the inside of a box 29 which is open at the front to allow the passage and the movement of the arms 2, 2.

On each pulley 5 is fixed to one end a metallic cord 6, 6 which is wound on the pulley itself. The other end of each cord issues from the inside of the box at the rear portion of it through a suitable hole and is fixed. in any suitable manner to a tube 9 having a D shaped section and which can, slide within another tube 8 (Fig. 7) of like section. 1

With the object in view of keeping the cord taut of the pivots of pulleys 5 springs 15 (Figs. 2 and 9) are provided.

The tube 8, having the tube .9 therein, is fixed at one end to the rear portion of the box 29.

The tube 9, to which are fixed the ends of the cords 6, 6 extends beyond the free'end of the tube 8 and is fixed inside a handle 10 of insulating material (Figs. 3 and 1) by means of screws '30.

In order to better fix the tube 9 in the handle 10, which latter is of cylindrical form, a filling; core 38 (Fig. 3) is provided and is fastened by the'same screws 30 which fix the tube 9.

At the free end of the handle 10 is fixed a sleeve 11 into which another sleeve 12 can be inserted (Fig. 5) which is integral with an extension stem 13.

The two sleeves 11 and'12, which slide one on the other may be connected by a plate spring 35 (Fig. 6) one end of which is fixed at the interior of the sleeve 12 whilst a the other end carries a pin36 which passes wall of the sleeve 12 through a hole in the 1 to (i) in and through the hole the wall of the sleeve 11. I

The whole of the, apparatus, excepting the head 1, is enclosed. in a casing having nearly ovoidal shape (Fig. which from the lower jaw, extends to a point of the tube 8 situated a short distance apart from the rear face of the box 29.

The cutting members 31, 32 respectively of the aws 16, 17 are mounted on the jaws in such a manner as to be easily replaced and are fastened thereto by the screws The operation of the apparatus is as follows:

When a wire, or a cord, is to be cut, spa-- cially if situated at a distance, or in casethe cutting must be carried "out quickly, the apparatus is thrown over the said wire or cord while holding the stem 13' grasped, and as soon as the wire or cord is struck, the apparatus is drawn towards the operator, which can also be done in darkness. The

casing, sliding over the Wire or cord, by

reason of its ovoidal shape, will cause the wire or cord to fall between the open aws l6 and 17 and the wire or cord then meeting the upper jaw will act as stop for the plier.

Then by further exerting a draw ng to the following will take wards the operator, place:

The handle 10 will drag withit the tube 9 sliding in tube 8 fixed to the box 29, which cannot be displaced as it is engaged by the wire or cordyto be, out.

The tube 9,jby sliding, draws the met? cords 6 fixed to it, causing the pulleys on which: said cords are wound, t rotate.

The pulleys, by means of the pinions 26, cause the gears 4 to rotate and the latter by means of the plnlons cause the sectors 3,

3 to rotate. By their displacement, the

sectors cause the arms 2,2 to approach and consequentlyto close the jaws 16 and 17 and so efl'ect the cut. This being effected as the plier. has no more a point of support, the sectors under the action of the'spiral springs tapering exterior of the casing acting to 1%, 14 return to their initial position of rest and bring back all the mechanism to initial position.

The springs 15 assist the movement for rewinding the cords 6, 6 on thepulleys 5, 5, dragging the apparatus. with the tube 8' along the inside tube 9 so that it is brought again to the initial position of rest Such an apparatus finds its special appl1- cation for cuttingv high voltage electric wires.

' -Having now particularly described andascertained the nature of the said invention and in whatmanner the same isto-be performed I declare that what I claim is "1. In a tool of the characterdescribed,

casing having an exteriorly'tapered open: end, a pair of. arms located in said casing and'pivoted together independently of said casing, a pair of laterally projecting cutting jaws carried by. said arms located exteriorly of the tapered open end of the casing,vthe

guide a wire into the space between said jaws for cutting act1onwhereby the tool may .be operated at a point distant-from said wire, and actuating means for saidjaws arranged, in said casing and supporting said aws in position therein.

2. In a tool of the character described, a casing having an exteriorly tapered open end, a pair of arms located in said casing and pivoted together independently of said,

casinggapairof laterally projecting jaws carried by said arms located exteriorly of the tapered open end of the casing, the outermost jaw extending a distance beyond the p'laneof the tapered end of the casing and constituting a stop for engagement with a wire whereby to, limit the movement-of the arms, a casing,

. members,

casing relative thereto and to permit/the tool to be operated at a point distant from said wire, the tapering exterior of the casing acting to guide a wire into the space between said aws forfcutting action, and actuating means'for said jaws arranged in said casing and supporting said jaws in position. i

In a tool of the character described, a pair of pivotally connected jaw carrying pivotally connecting each pairwith one of said members at a point eccentr c to the pivv otal axis of said member, a train of gears asa pair of members mounted I for turning movement 1n the casing, means inc; arms with said members at points eccentric to the pivotal axes of the latter, a train of gears associated with each member of the pair, actuating means associated" with the last gear ofeach train to actuatethe'latter to oscillate the'jaw carrying arms,and a handle carried by said casing and receiving the last mentioned means.

5. In a tool of the character described, a

casing, a pair of pivotally connectedjaw carrying arms,- rotatable members received in said'casmg and pivotally connected Wltll the respective aw carrying arms at points eccentric to'the pivotal axes of the rotatable a flexible actuating element, means connecting the flexible actuating element with the'rotatable members whereby,

to actuate the latter, a hollow handle carried by the casing, and a slidable member received in said handle and connected with the flexible element to actuatethe latter.

6. In a toolofthe character described, a

pair of pivotally connected jaw carrying arms, rotatable members, acasing receiving said members and pivotally connected with the latter at points eccentric to the pivotal axes thereof, a tapered hollowextension carried by the casingreceiving thej'aw carryng extremities of the arms for guiding an ob ect into the space betweenthe aws,ra

flexible actuating element, means connecting the actuating element with the rotatable members, a hollow handle carried the casing, and a slidable member received in said handle andconnectedwith the flexible actuatin element for controlling the latter.

Signed at Milan, Italy, this 11th day of June 1920. j H PIETRO 'sEooAMANI'; 

